What scientist discovered atoms contain electrons?

Which statement about dormant volcanoes must be true? AThey can never erupt again. incorrect answer BThey have not erupted for a very long time. incorrect answer CThey will erupt within the next 12 months.

A physics book is moved once around the perimeter of a table of dimensions 1 m by 3 m. If the book ends up at its initial position, what is the distance traveled

What is tarzan's speed vf just before he reaches jane? express your answer in meters per second to two significant figures?

The period of a sound wave is 0.002 seconds. The speed of sound is 344 m/s. whats the frequency

A pumpkin is thrown upwards at a speed of 27.5 m/s and from a height of 2 m above the ground. How long before it hits the ground and smashes

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.

What are the starting materials for nuclear fission

Why is it possible to throw a 0.145 kg baseball much further than a 7 kg bowling ball?

What is the name of the force that opposes or slows down the motion of objects